Improvement in steam-engines and boilers



UNITED STATES PATENT OFFICE,

GOTTLIEB F. BURKHARDT, OF BOSTON HIGHLANDS, MASSAOHSETTS.

liMPRovEwIENT |N STEAM-ENGINES AND Bo-ILERS.

Specification forming partv of Letters Patent No. 116,019, dated Jnne'QO, 1871.

"the drawing which accompanies and forms part of this specification, isa description of myinvention sufficient to en able those skilled in theart to practice it.

The invention relates to the method of utilizingexhaust steam fromsteam-engines, or to the construction and arrangement of the auxiliaryboilers with reference to the main boiler and the engines.

The drawing represents a construction and arrangement embodying myimprovement.

Figure 1 shows the parts in front elevation. Fig. is a plan. Fig. 'is aside elevation of them.

a denotes the main boiler. b is an enginecylinder,A supplied with steamfrom the boiler a through a pipe, c. d denotes the exhaustpipe from thiscylinder, and this exhaust-pipe leads into a steam-chamber, e, in theupper part of a tubular boiler, f, from which steamspace'opens a seriesotyertical tubes, g, leading through the boiler and into asteam-chamber, h, in the lower part thereof, from which space the-steampasses (by means of a pipe, j) into a steam-space, i, at the top of acondenser,V 7c, having tubes through which thel steam passes, and fromwhich they condensed steam tlows (through a pipe, my) into theWater-supply tank or well. The water-spaces around these tubes in theauxiliary boiler f and condenser 7c are kept supplied with Water by asuitable pump,

-Whicli forces Water through the condenser lc cylinder o exhausts; (by apipe, 13) into the exhaust-pipe d, so that the steam from both cyl-`inders passes into the steam-space e at the top of the boiler f.Extending through the boiler f are vertical flue-pipes s, which extendfrom a lire-box, t, (below the boiler,) through the boiler into aHue-chamber, u, over the boiler, from which chamber a lue-pipe, o,leads, such pipe o conveying the smoke and volatile products ofcombustion into a iiue, w, leadinginto the chimney x. The pipe t'extends down and 'communicates With a pipe,z, leading from the .fire-boxof the main boiler 'into the lire-box of the auxiliary boiler, and byclosing and opening the respective dampers-t-he tire in the maintire-box maybe carried through the flues of the auxiliary boiler; or,vice versa, there from the auxiliary lire-box may be conducted underlthe main boiler-fines. y y

By this 'arrangement of an auxiliary boiler and an auxiliary tire-boxand ilues it will be obvious that all of the heat of the exhaust steammay be Vutilized to heat the Waterin the auxiliary'boiler, and, with theheat from the auxiliary tire-box (or with heat from the main iirebox,)to convert the Waterinto steam,which, by means oit-t he pipe l, may beused to run the en gine-,f-andthat such exhaust steam may also be usedto heat (the Waterof supply, or to heat Water for yarious other uses.

The steam-from the auxiliary boiler may be conducted into the steam-roomof the main boiler 5- but I preferto' use it in driving the e11-gine-cylinder 0.

I claim-' 1. In combination with the main boiler and 'l engine, anauxiliary tubular boiler, f, arranged as shown and described, and havinga ser1es v of steam-tubes leading through it, `surrounded by `aWater-space, above which space is a steam- Y 3. The arrangement of theauxiliary re-box aime-pipe fu, cylinder f, and line-pipes z w,substantially as shown and described. Y

GOTTLIEB EBURKHARDT.

Witnesses:

FRANCIS GOULD, M, W. FROTHINGHAM.

